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IO.SYS language?

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Name: ...doCMOS...
Date: August 5, 2000 at 10:59:09 Pacific
Comment:

in what sort of a f---ing language is the
file IO.SYS (real-mode-kernel of several Platforms dos,9x...) written or compiled?
Is it possible to DEBUG it?
can you rip something out of it? like the
bootup logo or something else?
Has somebody a detailed tutor?
perhaps just some Offset adresses...???



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Response Number 1
Name: Jason
Date: August 5, 2000 at 11:59:54 Pacific
Reply:

IO.sys and logo.sys are pictures that are used when booting up or shuting down computer. U can open those two sys files in MSPAINT.


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Response Number 2
Name: Jon Fox
Date: August 5, 2000 at 12:02:09 Pacific
Reply:

Io.sys contains purely machine code and data.
I don't think you'd find much useful information if you disassembled it.


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Response Number 3
Name: W0rm
Date: August 5, 2000 at 12:17:29 Pacific
Reply:

errrr Jason, IO.SYS isnt a logo, its the dos kernel.


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Response Number 4
Name: Preston
Date: August 5, 2000 at 14:48:16 Pacific
Reply:

The io in io.sys stands for input/output. It isn't a program that loads pictures or bootup splash screens. It is the first file DOS loads when booting up and is responsible for the input/output for floppy/hard drives.

The only hacking/debugging of io.sys I've ever heard of is to disable the version check that Microsoft annoyingly puts into their products. For example, you can debug io.sys so that Win3 will run under the DOS that comes with Win95/98. If you know what you're doing, you can even run Win3.x using FAT32 partitions by making changes in the io.sys of DOS that comes with Win9x.

Otherwise, I can't think of any reason for wanting to alter it.


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Response Number 5
Name: mr o
Date: August 7, 2000 at 04:55:08 Pacific
Reply:

What exactly does the person want to find out from the io.sys?


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Response Number 6
Name: nicholas odolo
Date: August 8, 2000 at 04:24:27 Pacific
Reply:

when i tried to install DOS 6.22 from 6.20 i was unable to copy the file, hence rendering my computer not able to boot from the hard disk. because it was giving the error non system disk.

please help me on how to go about solving the problem.


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Response Number 7
Name: mr o
Date: August 9, 2000 at 02:06:23 Pacific
Reply:

try postin it in the main bit...


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Response Number 8
Name: P. Braren
Date: January 5, 2001 at 10:24:27 Pacific
Reply:

Very much interesting in trimming the size (over 200K) of io.sys from Win98SE when creating a multipupose Ghost boot floppy. Anyone found a way to safely remote just the embedded Win98 splash screen graphic from the io.sys file?


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